Balloon controlling device



July 22 1952 M. D. RDGERS 2,603,938

BALLooN C ONTROLLING DEVICE Filed oct. 15, 1949 l 2o 2o iiii' iiiiiiii nnnll mmm mmm Ill INVEN TOR. A MA/fojl/s D.-RODGR5 ArrAnoR/vsr .or cord from the supply package.

Patented 'July 22, A1952 BALLOON CONTROLLING DEVICE Marcus D. Rodgers, Lakewood, Ohio, assignerVV to Industrial Rayon Corporation, Cleveland, l1io, M a corporation of Delawarey Application October 15, 1949, Serial No. 121,550

claims. (o1. '5r-59V This invention relates to devices for controlling the ballooning elfect of yarn, thread, or cord during twisting operations.

In twisting it is customary to feed the yarn, thread, or cord through a suitable twisting guide positioned above a rotating yarn package to a laying guide and thence onto a collecting package. The twisting operation is usually carried out at relatively high speeds with the result that the yarn is subjected to centrifugal action causing it to balloon This ballooning action is not too objectionable if the maximum diameter remains relatively small; however, if the diameter is of substantial size the space required by any one supply package becomes excessive and the twisting apparatus becomes uneconomical. Also it is desirable to conduct the twisting operations with a minimum of stoppage because of knots and other imperfections Iin the yarn which during ballooning tend to cause breakage by ensnarlment of the yarn, entanglement in the twisting guide positioned above the rotating package, or entanglement with some other part of the twisting apparatus. Itis important therefore to control the balloon diameter and to restrict the balloon within a predetermined space during twisting. Means such as spaced rings or balloon girdles ofr various types are normally utilized for control of yarn balloons.

It has been observed that when a package from which the yarn is removed and twisted is relatively full the maximum ballooning diameter is greater than when the package is substantially empty. During such intervals of maximum ballooning the yarn has a tendency to rise above the supply package to sometimes become entangled with the twisting guide immediately above the package unless its upper portion is restrained so that the yarn is maintained clear of the guide. Minor imperfections in the supply package may momentarily halt the delivery of the yarn, thread When the momentary retardation is overcome, the sudden release imparts a shock wave to the balloon which may jump out of a balloon restricting means and ensnarl the twisting guide, etc. Knots in the yarn also tend to develop an eccentricity in the balloon which sometimes cause breakage while going through the guide. By adequately controlling the vertical travel and extent of the twisting balloon the yarn balloon can be kept a suflicient distance from the twisting guide, and also the twist can be better restrained from creeping back to the package whereon it may become twisted in with the turns still on the package.

The apparatus of this invention advantageously providesffora device that controls the ballooning of yarn, thread, or cord in a twisting operation at increased speeds. The device is of simple constructionvwhich permits the design of a compact twisting machine. It advantageously controls the balloon throughout the full unwinding period of a rotating package and minimizes breakage of the twisted material toimprove its quality, and the twist is made more uniform. These results are attained without imposing any undue frictional resistance on the material being twisted.

The device comprises a balloon restricting cylinder substantially fully encompassing a twisting package. The cylinder ends are advantageously turned in at a radius to substantially dampen and restrict the balloon from moving out of the cylinder and align its travel to a twisting guide above to thus prevent an entanglement of the twisted yarn with the guide, and improving the twisting of 'yarn of various qualities. Where there is not enough /vertical spacing to permit a cylinder to substantially fully enclose a twisting package the cylinder may be shortened and its base also turned inwardly at a radius which will control the balloon and keep it from emerging outside the cylinder. The cylinder ends may be further advantageously outwardly curved to protect the inner curved surface of the cylinder from damage which if imperfect may have the tendency to damage the yarn upon contact. Generally the cylinder is of such a width so as to permit a ready insertion of a twisting spool on a spindle, as well as its removal.

This invention will be more fully described by reference to the accompanying drawing which shows the application of a balloon controlling cylinder in a twisting operation. In the drawing,

Figure l is an elevation of a portion of an uptwisting apparatus embodying the balloon controlling device;

Figure 2 is a further elevation of a portion of a twisting apparatus representing a modified construction of a balloon controlling device; and

Figures 3, 4, and 5 are further details of the balloon dampening ends of the device.

Referring to the drawing a supply package I0 containing yarn, thread, or cord I I is rotated on ported on the transverse member l1, thence through a laying guide I8 mounted on a transverse bar I9 and onto a surface rotated collecting package 2B. Thecollecting package 20 is horizontally positioned in supports 2| while being rotated by surface contact with a driving roller 22.

The rapid rotation of the yarn supply package IU tends to throw theyarn Il in an outward direction causing it to balloon which, if unconned, would tend to become entangled with adjacent equipment to become broken. There is provided about the package l a vertically positioned cylinder 3S substantially encompassing the yarn package and being adapted to control the yarn balloon diameter to a diameter not greater thanv the cylinder. The cylinder is advantageously adjustably mounted and fixed on the twisting frame of the apparatus and the supply packages l0 are positioned within thecylinder and removed' therefrom.V The ,diameter ofl the cylinder is larger than that of itsA open ends. The balloonLbecause of the construction of'Y thel cylinder, is restrained in Vthe shape that it would, normally assume. As; shown the 'cylinder 30 has curved ends 3i, 32 which dampen the vertical ballooning effects so as to prevent the balloon from emergence, possible entanglement with theY twistingvguide IS, orbecoming 'entangled with the lower partof an adjacent twisting spool.

yThe balloonv controlling @cylinder 3QV is advantageouslycurved inwardly at its ends at a radius designed to keep the balloon from creeping out as welias' to restrain and dampen' it Ato'clear the twisting guide.. V V'ljhetwisting guide it: is desirably positioned-'relatiye to the curved portionV 31- of the cylinder a distance so asv not to drawv the balloon out of. fthe cylinder. As further shown in Figures 3, i and 5; the curved upper end 3i is turnedV in at ajradi-us thatv will gradually deflect 'thegballoon when it reaches that portion ofthe cylinder. The curved portion deflects andiiattensfthe upward portionof a yarn balloon in-` a dampening,restraining Yand oompressingfmanner soithatthe portion Qf'fthe balloon; enteringthe twisting'guide 51 is curved and theV guide provided with' sufcient-` clearance to prevent any1 yarn'jentan'glement. Thev curved portion 3l also tends toV depress the -Vballoon on a full yarn lsupply,Y andis particularly advantageous with malformed packages; Thebase portion of. the balloon restraining cylinder also may bey somewhat similarly curved inwardly' to prevent the balloon from 'creeping out;of the bottom of the cylinder. The-curvature 32- at the base need not be similar to that'of the curved portion 3l since the ballooning effect is not as4 severe at the base ofthe' balloon as it is: at vthe top'.

It is of course'important that the Vda'xnpen'ing surface of the curved portions 3l and 32Y b'e Vsmooth to 'avoid injury to the twistedfyarn. -Where there may be a tendency tov damag'ethe spool to sometimes become twisted in with the Y remaining Vyarn on the spool. IV claim:

l". In combination, a rotating yarn supply, a

twisting' guide positioned above said yarn supply, a yarn collecting package for said supply, a balloon controlling cylinder spaced about said yarn supply, said cylinder having an open end diameter greater than said yarn supply and less then'thecylinder itself, said cylinder adapted to control the ballooningof'saidyarn to a predetermined space. v

2. A balloon controlling device comprising a vertically positioned-,cylinder adapted to receive andencomp'assya twistingpackage and' said cylinder having" itsupper end' curved inwardly, the vopen'ingiV across Vthe curved portion being larger than the diameter ofatwisting package.

3. A balloon controlling device comprisinga vertically positioned? cylinder adaptedto receive and encompass a twistingv package, 'said cylinder loein'gv longer' than ai twisting package, and one end of saidcylinder being curved inwardly leaving an vopening havingra' ydiameter acrossthe curved' 'portion'.'iarger tha-nwthe diameter or a twisting'paokage; Y Y Y 4. A balloon controlling-"device comprising a 'vertically positioned cylinderadapted to receive and encompassa twisting package, one 'end only'of said cylinder extending Vbeyond a-` twistingJ package;V andv both said ends ofv said cylinder being inwardly curved leaving`"openings having diameters across thecurved portions larger-'than the' diameter of a"t`wisting package.

5. A balloonr controlling device comprising a verticallyI positioned cylinder 'adapted-v to" receive and' encompass a `twisting package,- and one 'end of said cylinder being curvedinward'lythen outwardly leavingv an opening havingY aiv diafneter across'thej curvedportion larger vthan the ydiameter of'a twisting package;

" l MARCUS-D; RODGERS:

Y anvERENoEs/ cri-ED The following 'rfrences y,arcor record?A in 1 the Date i vninfas,- 1-911 Mayan-1895 

